feature<CommitDetail>: goto diff view by double click changed file in commit information panel

src/Views/Controls/Tree.cs

@@ -75,6 +75,16 @@ namespace SourceGit.Views.Controls {
             RaiseEvent(new RoutedEventArgs(SelectionChangedEvent));
         }
 
+        public void Select(object dataContext) {
+            if (Selected.Count == 1 && Selected[0] == dataContext) return;
+
+            var item = FindItemByDataContext(this, dataContext);
+            if (item != null) {
+                AddSelected(item, true);
+                item.BringIntoView();
+            }
+        }
+
         protected override DependencyObject GetContainerForItemOverride() {
             return new TreeItem(0, Indent);
         }

src/Views/Controls/TreeItem.cs

@@ -27,7 +27,6 @@ namespace SourceGit.Views.Controls {
             this.indent = indent;
 
             Padding = new Thickness(indent * depth, 0, 0, 0);
-            RequestBringIntoView += (o, e) => e.Handled = true;
         }
 
         protected override DependencyObject GetContainerForItemOverride() {

src/Views/Widgets/CommitChanges.xaml.cs

@@ -16,6 +16,7 @@ namespace SourceGit.Views.Widgets {
         private List<Models.Commit> range = null;
         private List<Models.Change> cachedChanges = new List<Models.Change>();
         private string filter = null;
+        private bool isSelecting = false;
 
         public class ChangeNode {
             public string Path { get; set; } = "";
@@ -37,7 +38,28 @@ namespace SourceGit.Views.Widgets {
             UpdateVisible();
         }
 
-        public void UpdateVisible() {
+        public void Select(Models.Change change) {
+            isSelecting = true;
+
+            switch (modeSwitcher.Mode) {
+            case Models.Change.DisplayMode.Tree:
+                var node = FindNodeByChange(modeTree.ItemsSource as List<ChangeNode>, change);
+                modeTree.Select(node);
+                break;
+            case Models.Change.DisplayMode.List:
+                modeList.SelectedItem = change;
+                modeList.ScrollIntoView(change);
+                break;
+            case Models.Change.DisplayMode.Grid:
+                modeGrid.SelectedItem = change;
+                modeGrid.ScrollIntoView(change);
+                break;
+            }
+
+            isSelecting = false;
+        }
+
+        private void UpdateVisible() {
             Task.Run(() => {
                 // 筛选出可见的列表
                 List<Models.Change> visible;
@@ -115,6 +137,21 @@ namespace SourceGit.Views.Widgets {
             });
         }
 
+        private ChangeNode FindNodeByChange(List<ChangeNode> nodes, Models.Change change) {
+            if (nodes == null || nodes.Count == 0) return null;
+
+            foreach (var node in nodes) {
+                if (node.IsFolder) {
+                    var found = FindNodeByChange(node.Children, change);
+                    if (found != null) return found;
+                } else if (node.Change == change) {
+                    return node;
+                }
+            }
+
+            return null;
+        }
+
         private void SortFileNodes(List<ChangeNode> nodes) {
             nodes.Sort((l, r) => {
                 if (l.IsFolder == r.IsFolder) {
@@ -237,7 +274,7 @@ namespace SourceGit.Views.Widgets {
         }
 
         private void OnRequestBringIntoView(object sender, RequestBringIntoViewEventArgs e) {
-            e.Handled = true;
+            if (!isSelecting) e.Handled = true;
         }
 
         private void OnTreeSelectionChanged(object sender, RoutedEventArgs e) {

src/Views/Widgets/CommitDetail.xaml

@@ -8,7 +8,7 @@
              xmlns:widgets="clr-namespace:SourceGit.Views.Widgets"
              mc:Ignorable="d" 
              d:DesignHeight="450" d:DesignWidth="800">    
-    <TabControl>
+    <TabControl x:Name="body">
         <TabItem Header="{StaticResource Text.CommitViewer.Info}">            
             <Grid>
                 <Grid.RowDefinitions>
@@ -203,6 +203,7 @@
                         <DataGrid.RowStyle>
                             <Style TargetType="{x:Type DataGridRow}" BasedOn="{StaticResource Style.DataGridRow}">
                                 <EventSetter Event="ContextMenuOpening" Handler="OnChangeListContextMenuOpening"/>
+                                <EventSetter Event="MouseDoubleClick" Handler="OnChangeListMouseDoubleClick"/>
                             </Style>
                         </DataGrid.RowStyle>
                         <DataGrid.Columns>

src/Views/Widgets/CommitDetail.xaml.cs

@@ -4,6 +4,7 @@ using System.IO;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Input;
 using System.Windows.Navigation;
 
 namespace SourceGit.Views.Widgets {
@@ -88,11 +89,23 @@ namespace SourceGit.Views.Widgets {
         }
         #endregion
 
-        #region INFORMATION
+        #region EVENTS
         private void OnNavigateParent(object sender, RequestNavigateEventArgs e) {
             Models.Watcher.Get(repo)?.NavigateTo(e.Uri.OriginalString);
         }
 
+        private void OnChangeListMouseDoubleClick(object sender, MouseButtonEventArgs e) {
+            var row = sender as DataGridRow;
+            if (row == null) return;
+
+            var change = row.DataContext as Models.Change;
+            if (change == null) return;
+
+            body.SelectedIndex = 1;
+            changeContainer.Select(change);
+            e.Handled = true;
+        }
+
         private void OnChangeListContextMenuOpening(object sender, ContextMenuEventArgs e) {
             var row = sender as DataGridRow;
             if (row == null) return;

src/Views/Widgets/Histories.xaml.cs

@@ -35,7 +35,7 @@ namespace SourceGit.Views.Widgets {
 
             foreach (var item in commitList.ItemsSource) {
                 var c = item as Models.Commit;
-                if (c.SHA.Contains(commit)) {
+                if (c.SHA.StartsWith(commit, StringComparison.Ordinal)) {
                     commitList.SelectedItem = c;
                     commitList.ScrollIntoView(c);
                     break;